Tread portion of an automobile tire



FIG. 1 is a perspective view of a tread portion of an automobile tire showing my design;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a fragmentary enlarged front view surrounded by line A-A and B-B in FIG. 2; and,

FIG. 7 is a sectional view taken along line 7-7 in FIG. 6.

The intermediate and dark stippled shading in FIGS. 1-6 represent tread grooves having the depth shown in FIG. 7.

The broken lines are used to show portions of the tire that are not being claimed, and thus form no part of the claimed design. 

CLAIM The ornamental design for a tread portion of an automobile tire, as shown and described. 